This museum is in fact comprised of the 6C Episcopal palace (its oldest parts), the early 5C pre-Euphrasian basilica, of which only a few walls, columns with capitals and a beautiful floor mosaic with geometric patterns remain; and finally, the museum itself, which has exhibits of Ravenna-style mosaics. However, the highlight of the museum is without doubt the Fish mosaic (4C) which probably comes from the floor paving of the first edifice built on the site by the Christians.